Loom pattern-chain.



PATENTED AUG. 18, 1903. J. T. GYR. LOOM PATTERN CHAIN.

APPLICATION FILED MAY 19, 1903.

no MODEL.

Nrrn STATES Patented August 18, 1903.

7 ATENT JOSEPH T. CYR, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMP- MASSACHUSETTS, A

LOOlVI PATTERN-CHAIN.

SPECIFICATION forming part of Letters Patent N 0. 736,700, dated August 18, 1903.

Application filed May 19,1903. Serial No. 157,753. (No model.)

To all whom it may concern:

Be it known that I, JQSEPH T. CYR, a citizen of the United States, residing at Worcester, in the county of lVorcester and State of Massachusetts,have invented certain new and useful Improvements in Loom Pattern-Chains, of which the following is a specification.

My invention relates to loom pattern-chains or indicating-surfaces, and more particularly to to an improved construction of the class of pattern-chains with wooden bars or lags which carry the pattern-pins and which are used in the shedding mechanism of looms and more particularly in the dobby mechanism.

The object of my invention is to provide an improved pattern-chain of the class referred to.

In the ordinary construction of this class of pattern-chains the wooden bars extend in recesses in the pattern barrel or cylinder and are connected together to form a continuous flexible chain supported on the pattern-chain cylinder and revolved therewith by metal eyelets screwed into the edges of the wooden bars at their ends and metal links connecting the eyelets.

In my improved construction of the class of pattern-chains referred to, having wooden bars or lags with pattern-pins thereon, I employ the ordinary construction of a pattern barrel or cylinder having heads or ends with grooved or recessed portions to receive the ends of the metal rods or bars of the ordinary metal chain, which bars are connected at their ends by the ordinary metal links and split pins.

In connection with the metal bars and supported thereby I employ nonmetallic or wooden bars or lags having grooved or re- 0 cessed edges to receive the metal bars which support the wooden bars. The wooden bars are provided with a series of holes therein to receive one or more rows of pattern-pins,

which form the pattern-indicating surfaces.

Referring to the drawings, Figure 1 is a front view of a pattern-chain barrel or cylinder and a detached portion of a patternchain embodying my improvements supported thereon. Fig. 2 is, on an enlarged scale,

an end view of the parts shown in Fig.1 looking in the direction of arrow a, same figure; and Fig. 3 is, on an enlarged scale, a transverse cross-section through one of the wooden bars or lags detached, showing four pattern surfaces or pins therein.

In the accompanying drawings, 1 is a sleeve loosely mounted on a shaft (not shown) and having secured thereon the hub 2 of a starwheel 2. The pattern-chain barrel or cylinder 3 is loosely mounted on the shaft (not shown) and is connected to and rotated with the star-wheel 2.

The pattern-chain barrel 3 has at each end a head 3, having grooves or recesses 33 to receive the ends of the rods or bars 4. of the pattern-chain. The bars 4 are connected at their ends by themetal links 5, having holes therein to receive the ends of the bars and held on the ends of the bars by split pins 6.

All of the above parts may be of the ordinary construction in loom pattern-chains;

I will now describe my improvements.

A wooden or non-metallic bar.7 of a length a little less than the length of the metal rods t and of a width.a little greater than the distance between two of the metal bars 4 is provided on each longitudinal edge, preferably near the lower surface of the bar, with a concaved recess or groove 7 sufficiently large to readily receive a bar or red 4. By means of the bars or rods 4. extending in the grooves 7' in the edges of the bars 7 said bars are supported and maintained in position on the pattern-chain. To prevent any endwise movement of the bars 7 on the bars or rods 4,1 preferably use tubes or washers 8, mounted on the bars 4. at each end thereof, to extend between the ends of the bars 7 and the metal links 5, as shown in Fig. 1. The bars 7 are provided with a series of holes 7 therein. In this instance there are four parallel rows of holes extending in the direction of the length of the bars 7 to receive the pattern-pins or indicating-surfaces 9,which may be made in the ordinary way,with a reduced shank to extend into the holes 7" in the bars 7 and an enlarged portion 9 to engage the upper surface of the bars 7. The holes 7 in the bars 7 preferably do not extend through the bar, but only into the upper surface of the bars and of sufiicient depth to receive the reduced ends of the pins 9.

In assembling the parts of the chain the bars 7 are connected with the rodst by removing the connecting-link 5, which connects the rods 4, and inserting the bars 7 between a pair of rods 4, fitting the rods into the grooves 7 therein,and then replacing the link 5,and thus securing a bar 7 between a pair of bars 4.

It will be understood that the details of construction of my improvements may be Varied, if desired.

The bars 7 may be provided with one or more series of holes therein to receive the pattern pins 9, and said holes may extend through the bar 7, if preferred.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a loom pattern-chain,the combination with metal rods or bars, linked together at their ends, to form a flexible chain, of a nonmetallic bar having recesses in its longitudinal edges to receive said metal rods or bars, and be supported thereby, and holes therein to receive the pattern-pins, and said patternpins, substantially as shown and described.

2. In a loom pattern-chain,the combination with metal rods or bars, linked together at their ends, to form a flexible chain, of a nonmetallic bar having recesses in its longitudinal edges to receive said metal rods or bars, and be supported thereby, and having holes therein which do not extend through the bar, to receive the pattern-pins, and said pattern,- pins, substantially as shown and described.

J. T. OYR.

Witnesses:

J. O. DEWEY, M. HAAS. 

